Cited: • Augustine. On Marriage and Concupiscence. Nicene and Post-Nicene Fathers, First Series. Edited by Phillip Schaff. Buffalo: Christian Literature Publishing CO, 1887. http://www.newadvent.org/fathers/15071.htm (accessed March 7, 2013). • Bishaw, Alemayehu. United States Census Bureau, Last modified 2012. Accessed March 10, 2013. http://www.census.gov/prod/2012pubs/acsbr11-01.pdf. • Callahan, Daniel. Introduction. Catholic Case for Contraception. Edited by Daniel Callahan. London: The Macmillan Company, 1969. • Jordan, Mark D. The Ethics of Sex. Oxford: Blackwell Publishers Inc., 2002. • Jung, Patricia Beattie, and Aana Maria Vigen.Introduction. God, Science, Sex, Gender. Edited by Patricia Beattie Jung and Aana Marie Vigen. Urbana, Chicago, and Springfield: University of Illinois Press, 2010. • Kelly, Monsignor George A. Birth Control and Catholics. Garden City, New York: Doubleday & Company, Inc., 1963. • Kelly, Kevin T. New Directions in Sexual Ethics. London and Washington: Geoffrey Chapman, 1998. • Planned Parenthood, "Fertility Awareness-Based Methods (FAMs)." Last modified 2013. Accessed March 10, 2013. "Fertitlity Awareness-Based Methods (FAMs)." Planned Parenthood (2013): n.pag. Web. 10 Mar 2013. • Paul VI, Humanae Vitae, Vatican Web site, July 25, 1968, http://www.vatican.va/holy_father/paul_vi/encyclicals/documents/hf_p-vi_enc_25071968_humanae-vitae_en.html
Cited: • Augustine. On Marriage and Concupiscence. Nicene and Post-Nicene Fathers, First Series. Edited by Phillip Schaff. Buffalo: Christian Literature Publishing CO, 1887. http://www.newadvent.org/fathers/15071.htm (accessed March 7, 2013). • Bishaw, Alemayehu. United States Census Bureau, Last modified 2012. Accessed March 10, 2013. http://www.census.gov/prod/2012pubs/acsbr11-01.pdf. • Callahan, Daniel. Introduction. Catholic Case for Contraception. Edited by Daniel Callahan. London: The Macmillan Company, 1969. • Jordan, Mark D. The Ethics of Sex. Oxford: Blackwell Publishers Inc., 2002. • Jung, Patricia Beattie, and Aana Maria Vigen.Introduction. God, Science, Sex, Gender. Edited by Patricia Beattie Jung and Aana Marie Vigen. Urbana, Chicago, and Springfield: University of Illinois Press, 2010. • Kelly, Monsignor George A. Birth Control and Catholics. Garden City, New York: Doubleday & Company, Inc., 1963. • Kelly, Kevin T. New Directions in Sexual Ethics. London and Washington: Geoffrey Chapman, 1998. • Planned Parenthood, "Fertility Awareness-Based Methods (FAMs)." Last modified 2013. Accessed March 10, 2013. "Fertitlity Awareness-Based Methods (FAMs)." Planned Parenthood (2013): n.pag. Web. 10 Mar 2013. • Paul VI, Humanae Vitae, Vatican Web site, July 25, 1968, http://www.vatican.va/holy_father/paul_vi/encyclicals/documents/hf_p-vi_enc_25071968_humanae-vitae_en.html